A 21-slide, editable teaching presentation focusing on the compensation addition strategy.
This PowerPoint steps through the skills necessary to apply the compensation strategy successfully when adding numbers mentally. The presentation includes worked-out examples of rounding one and both addends, with gradual release towards independent work.
Use the pen tool during Slide Show mode to complete the sums.
Easily modify this teaching presentation to suit the abilities of your class by duplicating slides and changing the numbers used in the examples.
Common Core Curriculum alignment
Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.
Add up to four two-digit numbers using strategies based on place value and properties of operations.
Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.
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